121 research outputs found
'Asexual isn't who I am': the politics of asexuality
Some literature on asexuality has claimed that it is inherently radical and contains the potential for resistance. Unfortunately, this literature has tended to be unempirical, has imagined asexuality as a disembodied entity, and has marginalised the multiple identities held by asexual people. This article, inspired by Plummer’s critical humanist approach, seeks to explore how individuals understand their asexuality to encourage forms of political action in the areas of identity, activism, online spaces, and LGBT politics. What we found was a plurality of experiences and attitudes with most adopting a pragmatic position in response to their social situation which saw large-scale political action as irrelevant. We conclude by reflecting on what these results mean for those who see asexuality as potentially radical
Detecting Apparent Competition by Shared Parasitoid Enemies between a Native and a Range-Expanding Oak Insect
The expansion of a species’ range due to anthropogenic change leads to changes in species interactions with cascading effects in ecosystems. Oak gall wasps and their parasitoid enemies are a diverse community of insects that are structured by a network of interactions. One important interaction is “apparent competition,” in which a gall wasp species can indirectly compete with another species through shared parasitoids. Neuroterus saltatorius, an oak gall wasp, is experiencing a range expansion on the west coast of North America, where it outbreaks and causes damage in oak ecosystems. A co-occurring oak gall wasp, Andricus opertus, shares its range with N. saltatorius. We describe the parasitoid community of A. opertus to see if it is an apparent competitor to N. saltatorius. We have identified 32 morphospecies and are performing DNA barcoding to more accurately uncover interactions between parasitoids and the two host oak gall wasp species.https://orb.binghamton.edu/research_days_posters_2022/1094/thumbnail.jp
Prescription Drug Abuse: The Pharmacist\u27s Occupational Hazard
Prescription drug abuse within the profession of pharmacy is a rising threat that must be addressed. While familiarity of drugs, work-related stress, family history and enabling may contribute to addiction disorders, chemical impairment by the pharmacist can posse serious risks to patient care. Help is available for the struggling pharmacist in the form of treatment facilities and support networks for recovery
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First direct evidence of lion hunting and the early use of a lion pelt by Neanderthals
During the Upper Paleolithic, lions become an important theme in Paleolithic art and are more frequent in anthropogenic faunal assemblages. However, the relationship between hominins and lions in earlier periods is poorly known and primarily interpreted as interspecies competition. Here we present new evidence for Neanderthal-cave lion interactions during the Middle Paleolithic. We report new evidence of hunting lesions on the 48,000 old cave lion skeleton found at Siegsdorf (Germany) that attest to the earliest direct instance of a large predator kill in human history. A comparative analysis of a partial puncture to a rib suggests that the fatal stab was delivered with a wooden thrusting spear. We also present the discovery of distal lion phalanges at least 190,000 old from Einhornhöhle (Germany), representing the earliest example of the use of cave lion skin by Neanderthals in Central Europe. Our study provides novel evidence on a new dimension of Neanderthal behavioral complexity
Mapping the human platelet lipidome reveals cytosolic phospholipase A2 as a regulator of mitochondrial bioenergetics during activation
Human platelets acutely increase mitochondrial energy generation following stimulation. Herein, a lipidomic circuit was uncovered whereby the substrates for this are exclusively provided by cPLA2, including multiple fatty acids and oxidized species that support energy generation via β-oxidation. This indicates that acute lipid membrane remodeling is required to support energetic demands during platelet activation. Phospholipase activity is linked to energy metabolism, revealing cPLA2 as a central regulator of both lipidomics and energy flux. Using a lipidomic approach (LipidArrays), we also estimated the total number of lipids in resting, thrombin-activated, and aspirinized platelets. Significant diversity between genetically unrelated individuals and a wealth of species was revealed. Resting platelets demonstrated ∼5,600 unique species, with only ∼50% being putatively identified. Thrombin elevated ∼900 lipids >2-fold with 86% newly appearing and 45% inhibited by aspirin supplementation, indicating COX-1 is required for major activation-dependent lipidomic fluxes. Many lipids were structurally identified. With ∼50% of the lipids being absent from databases, a major opportunity for mining lipids relevant to human health and disease is presente
Quantitative Microscopy Reveals Centromeric Chromatin Stability, Size, and Cell Cycle Mechanisms to Maintain Centromere Homeostasis
The deposited item is a book chapter and is part of the series "Centromeres and Kinetochores" published by the publisher Springer Verlag. The deposited book chapter is a post-print version and has been submitted to peer reviewing. There is no public supplementary material available for this publication. This publication hasn't any creative commons license associated.Centromeres are chromatin domains specified by nucleosomes containing the histone H3 variant, CENP-A. This unique centromeric structure is at the heart of a strong self-templating epigenetic mechanism that renders centromeres heritable. We review how specific quantitative microscopy approaches have contributed to the determination of the copy number, architecture, size, and dynamics of centromeric chromatin and its associated centromere complex and kinetochore. These efforts revealed that the key to long-term centromere maintenance is the slow turnover of CENP-A nucleosomes, a critical size of the chromatin domain and its cell cycle-coupled replication. These features come together to maintain homeostasis of a chromatin locus that directs its own epigenetic inheritance and facilitates the assembly of the mitotic kinetochore.There are no funders and sponsors indicated explicitly in the document.info:eu-repo/semantics/publishedVersio
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